Details:
*USB2.0 and USB 1.1 Compliant and USB-IF certified
*Supported data speed :1.5/12/480Mbps
*One upstream and seven downstream ports
*Supports both bus-and self-powered(automatic switching 2A power adapter included)
*Over-current detection and protection for each down-stream port
*Hot-swappable Plug&Play connection
*Daisy-chain connection of up to 127 devices
*Dimensions:3.2X1.8X1 inches
Input:DC5.0V,550mA Output:DC4.2V,300mA